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Transactions of the American Institute of Electrical Engineers, Part II: Applications and Industry

Issue 4 • Date Sept. 1958

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Displaying Results 1 - 19 of 19
  • The effect of quantization in sampled-feedback systems

    Publication Year: 1958, Page(s):177 - 182
    Cited by:  Papers (54)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1618 KB)

    THE RAPID ADVANCE of digital computers and digital technology has resulted in recent years in the development of digital versions of practically every control system component. As a result, mixed systems composed of both digital and analog elements are becoming quite common. View full abstract»

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  • The sensitivity of the poles of linear, closed-loop systems

    Publication Year: 1958, Page(s):182 - 187
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1813 KB)

    One method of evaluating the constancy of dynamic response of a system is to determine how sensitive the poles of the system are to variations of the system parameters. If the sensitivity of a pole to one particular parameter is known, then for small variations of the parameter, the total change in the pole position may be easily computed. This method is used to show how dynamic error analysis in ... View full abstract»

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  • Use of phase space in transient-stability studies

    Publication Year: 1958, Page(s):187 - 191
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1723 KB)

    IN THE PAST FEW YEARS a great deal of interest has developed in the analysis of nonlinear systems. Much of this has been the result of the great strides taken in the field of control systems. However, nonlinearities have a way of appearing in many forms in many different types of systems. In fact, almost all systems when analyzed carefully have some degree of nonlinearity, and the linear represent... View full abstract»

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  • Statistical design theory for digital-controlled continuous systems

    Publication Year: 1958, Page(s):191 - 201
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3383 KB)

    IN A PREVIOUS PAPER,1 the basic theory and a procedure for optimum design of strictly digital systems were presented. In practice, however, strictly digital systems are few in number. Of far greater interest are digitally controlled continuous systems, in which a continuous plant is controlled by intermittently monitored and processed error signals. While only error signals at specific instants ar... View full abstract»

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  • Approximate analysis of the drag cup A-C tachometer

    Publication Year: 1958, Page(s):202 - 209
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2037 KB)

    Temperature coefficient, output voltage, and speed linearity error of output voltage are indicated in terms of relative changes in tachometer cup impedances when the output winding is essentially unloaded. By replacing the drag cup of a precision drag-cup a-c tachometer with one having a higher resistivity and a lower temperature coefficient of resistance, the following improved characteristics we... View full abstract»

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  • Practical air filtration for diesel locomotives

    Publication Year: 1958, Page(s):209 - 212
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1411 KB)

    VARIOUS forms of dirt and deposits in the engine and electric equipment of a diesel-electric locomotive are generally considered harmful. The purpose of filtration equipment is to remove as much of the dirt as possible, within economic limits. There is, however, a certain level of cleanliness beyond which it is not feasible to operate. View full abstract»

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  • An evaluation of the effect of dirt on diesel-electric locomotives

    Publication Year: 1958, Page(s):212 - 215
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1264 KB)

    THE EVALUATION of dirt costs on diesel-electric locomotives made in this paper is admittedly extremely approximate in nature because of the scarcity of factual data and the many assumptions used in lieu thereof. It divides the locomotive into three main categories: the diesel engine (with cost figures of fair accuracy), and electric apparatus and other apparatus with dirt costs of ¿order-of-magni... View full abstract»

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  • Wheel-slip detection in railroad braking

    Publication Year: 1958, Page(s):215 - 219
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5925 KB)

    THE INVENTION of the compressed air brake by George Westinghouse in 1869 was followed rather promptly by investigations of wheel slip and wheel slide. This is reported in the famous Galton Westinghouse Tests of 1878 and 1879.1 Prior to that time, wheel slip or slide was unknown on cars because the hand brakes used did not supply sufficient braking effort. Wheel slip frequently occurred during acce... View full abstract»

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  • An analog computer study of a torsional vibrations problem

    Publication Year: 1958, Page(s):219 - 227
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2287 KB)

    TORSIONAL VIBRATION studies of simple mechanical systems are usually handled by methods which, while not difficult, often require the expenditure of considerable time when done by hand. The use of a digital computer shortens the time considerably. One method frequently used is the Holzer table calculations1 resulting in the determination of the natural frequencies of the system. Another method is ... View full abstract»

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  • Ventilating systems for railway traction equipment

    Publication Year: 1958, Page(s):227 - 230
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2869 KB)

    IN THE EARLY STAGES of the development of railway traction equipment the need for some form of ventilation became evident. This need increased with the continuing demand for increased output. As a result, cooling systems evolved from self- to forced ventilation. Their development was not, however, an unmixed benefit. Any ventilation tends to draw dirt, snow, moisture, and other contaminants into t... View full abstract»

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  • Field experience with electrostatic precipitator on diesel locomotive engine air intake

    Publication Year: 1958, Page(s):230 - 235
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4050 KB)

    An experimental electrostatic precipitator was specially designed to fit the limited space in a diesel locomotive. Its effectiveness as an engine intake air cleaner and its practicality as a regular component in the locomotive were evaluated after two years of heavy freight service. View full abstract»

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  • Design of a drive system for a rotating arm

    Publication Year: 1958, Page(s):236 - 241
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2985 KB)

    THE SELECTION and preliminary design of a drive system for a unique test facility called a ¿rotating arm¿ was carried on simultaneously with the structural and mechanical designs. This rotating arm is required for directional-stability and maneuverability studies of high-speed submarines and surface ships. Large-scale models will be towed in circular paths with radii ranging from 12 1/2 feet to ... View full abstract»

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  • Special power and lighting systems on aircraft carriers

    Publication Year: 1958, Page(s):241 - 245
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1458 KB)

    SINCE the introduction of aircraft carriers to the Fleet of the U. S. Navy their role has continually increased in scope as well as in importance. This has been due chiefly to advances made in aircraft and associated weapons and systems. These advances have had a direct effect on the electric power requirements of the ship service and emergency power system. Fig. 1 shows how ship service generatin... View full abstract»

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  • A differential reluctance measuring system and its application to model and ship testing

    Publication Year: 1958, Page(s):245 - 249
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (8627 KB)

    A measuring system is described which has been developed at the David Taylor Model Basin for use in model and full-scale ship testing. The system utilizes transducers of the differential air-gap type, special designs of which permit measurement of torque or thrust in rotating shafts without the use of slip rings. The system includes instrumentation for direct recording and for visual or automatic ... View full abstract»

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  • Design features of large semiconductor rectifiers

    Publication Year: 1958, Page(s):249 - 258
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3869 KB)

    PARAPHRASING GERTRUDE STEIN, a rectifier is a rectifier is a rectifier. The many different service requirements, compounded by many economic factors, all influence the choice of design features available to the manufacturer. To obtain the best rectifier to fill specific requirements, one needs to make a careful evaluation of all the factors involved. View full abstract»

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  • Analysis of ignitron rectifiers for reversing-mill drives

    Publication Year: 1958, Page(s):259 - 270
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4400 KB)

    A REVERSING-MILL DRIVE for rolling-mill service for rolling blooms, slabs, or plates requires application of d-c motors operated under a special load cycle. The motor must be started, accelerated, operated under load, and decelerated many times as the metal which is being rolled is passed back and forth through the rolls. On alternate passes the motor is operated in the reverse direction. The time... View full abstract»

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  • A static exciter for aircraft A-C generators

    Publication Year: 1958, Page(s):271 - 277
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5134 KB)

    HISTORICALLY SPEAKING, most aircraft a-c generators in this country have obtained their field excitation from a conventional d-c rotating exciter. This type of exciter is characterized by rotating windings and commutators to produce direct current. Slip rings are used to carry excitation current to the rotating field of the a-c generator. View full abstract»

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  • Lighting the modern commercial aircraft

    Publication Year: 1958, Page(s):277 - 283
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2582 KB)

    THE ADVENT of an aircraft wherein 115-volt alternating voltage is the primary power system offers the lighting engineer an opportunity to exploit a wider field of lighting devices. Previously, aircraft could use alternating voltage only at a sacrifice as it was heavy, expensive, and inefficient. However, it now occupies an advantage over 28-volt direct voltage for lighting use. It is the purpose o... View full abstract»

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  • The advantages of a pneumatic electric power system for high mach number aircraft

    Publication Year: 1958, Page(s):283 - 288
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2050 KB)

    AS THE SPEED of aircraft increases, the capability of the accessory power equipment to meet the added requirements imposed by such vehicles must also increase. The important need is for these capabilities to occur in time to be used on the aircraft. View full abstract»

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Aims & Scope

This Transaction ceased production in 1963. The current retitled publication is IEEE Transactions on Industry Applications.

Full Aims & Scope